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Identification and Structural Characterization of Viroporins from Deadly Hemorrhagic Viruses

Hiya Lahiri1,2, Kingshuk Basu2, Isaiah T Arkin1,2

  • 1Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 9190400, Israel.

Viruses
|August 28, 2025
PubMed

Insights

Researchers identified a viroporin in Crimean-Congo hemorrhagic fever virus (CCHF-V) using genetic assays. This finding offers potential for developing new treatments against CCHF-V, unlike Ebola virus where no viroporin was found.

Area of Science:

  • Virology
  • Molecular Biology
  • Drug Discovery

Background:

  • Crimean-Congo hemorrhagic fever virus (CCHF-V) and Ebola virus are Risk Group 4 pathogens causing severe hemorrhagic fever outbreaks.
  • Limited effective treatments exist for these viral diseases, necessitating novel therapeutic strategies.
  • Viral ion channels, or viroporins, are potential drug targets for antiviral development.

Purpose of the Study:

  • To identify and characterize viroporin candidates in CCHF-V and Ebola virus genomes.
  • To model the structures of potential viroporins to facilitate drug discovery efforts.
  • To explore novel therapeutic avenues against CCHF-V and Ebola virus infections.

Main Methods:

  • Utilized bacteria-based genetic assays to screen for viroporin activity.
  • Examined two candidate viroporins from CCHF-V and Ebola virus.
  • Modeled the proposed structures of identified viral ion channels.

Main Results:

  • CCHF-V glycoprotein (gp) demonstrated significant ion channel activity, consistent with known viroporins.
  • No viroporin candidate was identified in the Ebola virus genome using the employed experimental approach.
  • Structural modeling was performed to aid in understanding the function of CCHF-V viroporin.

Conclusions:

  • The CCHF-V glycoprotein functions as a viroporin, presenting a viable target for antiviral drug development.
  • The absence of a detectable viroporin in Ebola virus under these conditions warrants further investigation.
  • This research opens new avenues for targeted therapies against CCHF-V, a significant public health threat.

Keywords:
Crimean–Congo hemorrhagic feverEbola virus diseaseion channelsstructural analysisviroporins

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